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Photographic film spectral distribution measuring method for calculating exposure value - using linear summation of main spectral distribution components for different samples
Photographic film spectral distribution measuring method for calculating exposure value - using linear summation of main spectral distribution components for different samples
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机译:用于计算曝光值的胶卷光谱分布测量方法-使用不同样品的主要光谱分布分量的线性求和
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摘要
The spectral distribution measuring method involves analysis of the spectral distributions of a number of film samples, to determine the main spectral distribution components. The light passed through the film is spectrally divided into different wavelength bands, corresponding in number to the main spectral distribution components. The spectral distribution coefficients are obtained by linear summation of the latter, using the photometric values for each wavelength or wavelength band. The main spectral distribution components are obtained by analysis of spectral transmission density distributions for a number of similar film samples. ADVANTAGE - Accurate; compact photometric appts. may be used which does not require defraction grating or several interference filters.
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